Form 4: MKS EVP Kathleen Burke Sells 4,254 Shares

MKS Instruments' EVP, GC & Secretary, Kathleen Flaherty Burke, reported the sale of 4,254 shares of common stock for $250 per share.

Summary

• Kathleen Flaherty Burke, Executive Vice President, General Counsel, and Secretary of MKS Instruments, Inc. (MKSI), reported a transaction.
• The transaction involved the disposition of 4,254 shares of MKS Instruments Common Stock.
• The shares were sold at a price of $250 per share.
• The transaction occurred on February 20, 2026.
• Following this sale, Ms. Burke beneficially owns 53,794.485 shares of Common Stock.
• The transaction was made pursuant to a Rule 10b5-1(c) pre-arranged trading plan.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event. While an executive sale can sometimes be perceived negatively, the disclosure that it was executed under a Rule 10b5-1 plan suggests it was pre-scheduled and not based on new, undisclosed information, mitigating potential negative sentiment.

Negatives

• An executive's sale of shares, even under a pre-arranged plan, can sometimes be interpreted by the market as a slight reduction in insider confidence, though this is often for personal liquidity management.

Industry Context

StockSavvy.ai notes that insider transactions, particularly sales by high-level executives, are routinely monitored by investors for signals regarding management's perception of the company's future prospects. While a 10b5-1 plan indicates a pre-scheduled sale not based on immediate new information, the volume and frequency of such sales across the executive team can still influence market sentiment.

Stakeholder Impact

• Shareholders: May interpret the executive's sale as a signal, though the 10b5-1 plan suggests it's for personal financial planning rather than a reflection of company performance.

Key Dates

Keywords

MKS Instruments, MKSI, Insider Trading, Form 4, Stock Sale, Executive Compensation, Kathleen Flaherty Burke, 10b5-1 Plan